Most certain plant ID's?

[Koen G]

It's been edited, with reference to Marco's post. I reduced the number of bolded ID's to the three superstars viola, ricinus and water lily. Let me know if anything else deserves to be bolded. (My personal favorite remains polygonum for You are not allowed to view links. Register or Login to view. - there was great agreement on the forum and it is found in some of the old lists).